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mathgrrl

KH-260 Field Notes 2: Ribber Tube

KH-260 Field Notes 2: Ribber Tube 640 480 mathgrrl

This is part 2 of our notes as we work through the basics on a Brother KH-260 knitting machine. In part 1 we dusted off the machine and made a quick fair isle Trash Swatch. This time we’ll review how to get the ribber bed adjusted and lubricated, and then create a piece of circular knitting that is open on both ends.

KH-260 Field Notes 1: Trash Swatch

KH-260 Field Notes 1: Trash Swatch 2016 1512 mathgrrl

This is the first of a series of blog posts that will catalog our adventures with a Brother KH-260 knitting machine. We’ve set up the machine and know the basics of using it in various ways, but what now? In this “Field Notes” series we’ll share quick notes about what we learn as we go forward. Nothing fancy, just a day-to-day journal of what works and what doesn’t. Like everything we post here at Hacktastic, we’ll talk a lot about our failures and problems, since that is where learn the most!

Crochet Rainbow Blanket

Crochet Rainbow Blanket 2560 1920 mathgrrl

This very simple blanket pattern is great for using up yarn scraps (or to give you an excuse to purchase more yarn, let’s be honest). The pattern is very forgiving about yarn thickness, and gives you a chance to play with color transitions. The finished piece is comfy and casual. The holes are fun to push your fingers through, and make the blanket airy and cool. Based on the Vintage Vertical Stripe Crocheted Blanket Pattern from Bella Dia, except with two rows of each color and some attention to detail at the edges.

Space-Filling Terrazzo – Getting Started

Space-Filling Terrazzo – Getting Started 640 480 mathgrrl

This is the first in a series of posts about a space-filling riff on Tinna’s Terrazzo Afghan. Our design is going to start off looking like one of Tinna’s Terazzo squares, but it’s going to continue as a larger and larger square, with lots of different but “space-filling” patterns along the way. It won’t be ONE space-filling curve (sorry, math geeks), but it will fill space efficiently as we build the pattern out from the center.

Electoral State Stackers

Electoral State Stackers 2016 1512 mathgrrl

I haven’t been stress-printing before the election, YOU have. Well, maybe you will after this post, at least. Fire up your 3D printer(s) because there are dozens of things you need to print before Tuesday, including each of the 50 states (and DC, which has 3 electoral votes), sized to each have approximately the same area, with heights determined by number of electoral votes.

10 Quick Tips for Building an Interactive Math Course in Canvas

10 Quick Tips for Building an Interactive Math Course in Canvas 1906 1452 mathgrrl

Fall semester is coming and you’re teaching online… let’s pause for a small scream 😭

Next year we’ll all be experts and there will be no end of talks, papers, and blog posts that we can use to figure out what to do. But right now we need the quick and dirty. What can we do NOW, and fast, to make our online math course content more interactive and engaging? If you’re getting ready to teach math online and your school’s LMS is Canvas, here are 10 quick tips to get you rolling.

Fitted Face Mask for People Who Aren’t Great at Sewing

Fitted Face Mask for People Who Aren’t Great at Sewing 2560 1920 mathgrrl

Over the past weeks I’ve iterated mask designs many times, acquired a bunch of sewing supplies, and learned from a lot of online patterns and videos. This mask design has a sewn-in nose wire, elastic loops that go all the way around your head, a filter sewn inside the mask, and minimal exposed seams. It’s washable and reversible, so you can decide which side is the outside after you’re done sewing it, or each time you wash it.

Using LaTeX with the New Canvas Quiz Engine

Using LaTeX with the New Canvas Quiz Engine 800 601 mathgrrl

Okay. Deep breath. It’s time to start figuring out how to teach online… I mean, how to do Actually Do It Well, not just as an emergency solution thrown together over a frenzied and sleepless week. There is a lot to work to do, so let’s start with something small: online math quizzes. In this post we’ll walk through how to use LaTeX typesetting in both the new and legacy Canvas quiz engines.

Laser Cutting from a 3D File

Laser Cutting from a 3D File 640 480 mathgrrl

To make files for laser cutting, you need two-dimensional information. You could download a picture from the internet, draw something yourself, or create an image in a program like Illustrator or Inkscape. In this post we’ll walk through the process of creating a 2D-laser-cuttable SVG file from a 3D-printable STL file using the free online in-browser modeling program Tinkercad.

Origami Press #2: Yoshizawa Butterfly

Origami Press #2: Yoshizawa Butterfly 2016 1512 mathgrrl

Our second origami press is a helper for folding a beautiful and elegant butterfly model designed by Akira Yoshizawa. One of the final folds of this butterfly model pulls the paper together past its natural fold line, which is what creates the organic, curvy shape of the finished model. This press enables the folder to make this crucial fold very cleanly and thus produces a more reliable butterfly model…

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